Theodore Payne California Native Plant Database

Arctostaphylos insularis

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Arctostaphylos insularis
Arctostaphylos insularis

Botanical Name: Arctostaphylos insularis
Common Name: Santa Cruz Island Manzanita

Bright green, shiny leaves and large white flower clusters. Provide extra summer water when planted inland. Found only on Santa Cruz Island.

Plant Family: Ericaceae
Plant Type: Shrub
Height by Width: 6-12' H x 6' W
Growth Habit: Upright, tree-like
Deciduous/Evergreen: Evergreen
Growth Rate: Moderate
Sun Exposure: Coast: full sun; Inland: part sun
Soil Preference: Adaptable
Water Requirements: Drought-tolerant to moderate
Cold Hardy to: 35 degrees F
Flower Season: Winter/Spring
Flower Color: White
Endangered?: Not Listed
Distribution: Northern Channel Islands (Santa Cruz Island)
Natural Habitat: Rocky slopes, chaparral, woodland below 1300'

Image:hummingbird_iconA.jpg Image:songbird_iconA.jpg Image:butterfly_iconA.jpg Image:slope_iconA.jpg Image:container_iconA.jpg

Care and Maintenance
  • With proper placement, manzanitas require little maintenance. Selectively prune to remove dead branches or to reveal structure. Avoid unnecessary pruning. Manzanitas are prone to branch die-back, caused by a naturally occurring fungal pathogen. When removing dead branches, sterilize pruning shears with alcohol between cuts to prevent the spread of the disease.

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